Automatic selective record changer



Feb. 10, 1942. Y Y J. ANDRES Erm.

AUTOMATIC SELECTIVE RECOR CHANGER Filed Jan. 28, 1938 7' sheets-sheet 2 l JZeadore 7L Feb. 10; 1942. l.. J. ANDRES ETAL "2,272,500

AuToMATr sELEcTIvE` RECORD CHANGER Filed Jan. 28, .1938 7 sheets-sheet 3v Feb.` 10,' 1942.

l.. J. ANDRES ETAL AUTOMATIC SELECTVE RECORD CHANGER Filed Jan. 28, 1938 n '7 SheetLs--Shee'l 4 Feb. 10, 1942. l l.. J. ANDRES Erm. 2,272,500

` AUTOMATIC SELECTIVE RECORD CHANGER Filed Jan. 2a, 1938 'r'sheets-sheet Feb. 10, 1942. l., .LANDRES ETAL 2,272,500

AUToMATm sELEcTlvE RECORD CHANGER Filed Jan. g8, 1938 7 Sheets-sheet e 7 A MA .w ,7/ W m m J 6 ad j 3fm au ,.0/1,"PIII kf J AV w 4m a 5 7 w w www M y wg@ Feb. 1o, 1942. J, ANDRES mL y.2,272,500

AUTOMATIC SELECTIVE RECORD CHANGER Filed Jan. 28, 1938 '7 Sheets-Sheet 7 Patented Feb. 1o, i942 l Nr orales AUTOMATIC sazac'rrvn aecomo CHANGER Lloyd J; Andres, Chicago, Ill., and Theodore M.

Wright, North Tonawanda, N. Y., assignors to Automaticnstrument Company, Grand Rapids, Mich., a corporation of Michigan Application January 28, 1938, Serial No. 187,500

3 Claims. This invention relates in' general to improvements in automatic phonographs, and more par- 4 ticularly to an automaticy phonograph mechanism adapted to playone or more selected recordsl automatically without attention of the operator after the selection is made.

The principal object of this invention is to provide a simplified compact machine capable of playing one or more selected records, and following the playing of .each record, restoring said record or records to their .respective storage posirecord from its shelf in the record magazine onto the turntable for playing, and upon the comple-A l tion of playing, returning' the record from the turntable to its shelf in the record magazine.

A further object of this invention provides for the automatic withdrawal of the turntable spindle during the time the record is being slid from its shelf onto the turntable, and subsequently projecting the turntable spindle through the central hole of the record for playing; and after playing the record, again withdrawing the turntable spindle, permitting the record to be slid from the turntable back to its original positio on its respective shelf.

A further object of this invention provides for the utilization of a new selector system utilizing a combination of mechanical and electrical elements cooperating to select and play the selected records, and subsequent to the selecting of each record, automaticallyl restoring the corresponding selector elements to their. normal positions; and upon the completion of the play of all selected records, opening a master switch, bringing'the entire machine to its rest position.

Another object of this invention provides for the use of one driving motor for operating both the record changing mechanism and the turntable jincluding means for stopping the turntable during the period a record is being transferred.

' Another object of this invention is the provision for ay positively driven means for raising and lowering the record magazine in exact timed relation with the movement of the yselector elements and the selector restoring means.

A further object provides for an accurate its repose position.

electro-mechanical means for stopping the movement of the record magazine and its associated selector elements when each record shelf is registered adjacent and parallel to thel upper surface of the turntable.

Referring to the accompanying drawings: Fig. 1 is a plan view of the entire machine in Fig. 2 is a side elevation of the mechanism.

Fig. 3 is a fragmentary plan view showing the transmission parts of the mechanism with the turntable, record transfer arms, and piclrup carriage removed.

Fig. 4 is an end elevation taken through line af--a., Fig. 1.

Fig. 5 is an end elevation taken through line b-b, Fig. ,3.

Fig. 6 is the side elevation taken through line c-c, Fig. 3.

Fig. 7 is an enlarged .fragmentary elevation of the pickup carriage control mechanism. v

Figs. 8 and 9 are sectional views of the pickup carriage operating mechanism taken through line Fig. 10 is an end elevation of the selector assembly taken through line e-e, Fig. 3.

Figs. 11, 12 and 13 show the transmission clutch and associated mechanism in their three `the principal components in their operative relay A tion mounted on base l. The electric driving motor 2 transmits power to the turntable 3 and the record changing components through the pulley I 1i, belt 5, pulley 6, pulley l, belt 8, and pulley 9.

The pickup arm l0 is shown in its rest position and is pivotally mounted about vertical axis Il. The record magazine assembly I'2 is retained and guided in its vertical movement by two vertical shafts: I3, fixed to base l.

The selector assembly i4 contains a series of selecting'push buttons l5. Y

The record shifting amis I6 and ll are pivoted about vertical axes i8 and I 9, and arranged to swing horizontally to remove a selected record from the magazine and slide it upon the turntable for playing; and likewise upon the completion of playing, slide the record back from the turntable into its rest position on ashelf in the record magazine. I

-,Stationary yguide 20 is provided to insure the table in its proper path.

record being transferred to and* from the turn- Fig. 2 shows the motor and the belt drive system arranged to apply rotation to the turntable drive shaft- 2|, and the transmission drive shaft 22.

The pickup arm I9, Fig. riage 23, is pivoted upon horizontal axis 24 and is shown in rest or elevated position, the stylus end of the pickup arm being suspended against gravity by stud 25.

The record shelves 26, Fig. 2, are held in their spaced relationship by collars 21 and are clamped to the record magazine base 28 by three threaded tubular members 29 and hex. nuts 30, shown in Fig. 1. A portion of the peripheral edge of each record shelf 3l, Figs. 1 and 6, adjacent to the turntable, is tapered to assure proper entrance of the record in the magazine when the record is being transferred.

The supports 32 and 33, Fig. 2, are integral with the base I and provide the bearings on which the record transfer arms I6 and I1 are pivoted on their axes I8 and I9, shown in Fig. 1.

Rotation is imparted to the turntable 3 through the elements shown in Fig. 3; namely, the pulley 4I5, shaft 2 I and the friction clutch 33-35. When the clutch is engaged, the rotation is carried to shaft 3G and the worm 31. The worm wheel 33, which mates with the worm the turntable quill shaft 39 and supported on suitable bearings. A pin 40 through the shaft 39 engages a slot in the hub of the turntable 3 and the drive is thus completed.

The collar tl, Fig. 3, is fixed to shaft 33 and a coiled spring 32 interposed between the said collar and the stationary bearing support for shaft 31. The spring thus urges the entire shaft toward the friction clutch. When the shaft is urged in this direction, the clutch is disengagedand hence, rotation of shaft 2| does not rotate shaft 36 or the turntable.

The magnet 43, Fig. 3, cooperates with pivoted lever til, one end of which is the magnet armature, and the opposite forked end engaging with the groove in collar Ill. When the magnet i3 is energized, the pressure exerted by spring l2 is overcome and the shaft 36 and all its components are moved sufficiently to engage the clutch 313-435. Under these conditions, rotation of shaft 2l is carried to the turntable 3.

The record selecting and transferring mechanism is driven by transmission shaft 22, Fig. 3, which is rotated by the motor through the pulley and belt train previously described, and shown on Figs. 1 and 2.

The mitre gear 50, Fig, 3, is arranged to drive an identical gear I through an intermediate mitre gear 52. Clutch member 45 is keyed to the end of shaft 22 and arranged to be moved through a limited distance along the axis of its shaft. In the position shown on Fig. 3. the clutch member 45 is engaged with the selector clutch member 4E. Clutch member 46 is fixed to shaft 41 which is supported on bearing supports 4B and 49. Attached to the end of shaft 41 is mitre gear 50. Thus, when clutch members 45 and 46 are enged, rotation. of shaft 22 rotates to mitre gear The mitre gears 50 and 5I being permanently meshed with intermediate mitre gear 52, mitre gear 5I is rotated in the opposite direction to that of mitre gear 50. The gear 5I transmits rotation to shaft 53, and the selector restoring drum 54, through worm 55 and worm wheel 56, which are permanently meshed. v

2, and its integral car- 31, is integral with Mounted over shaft 41 is commutator 51, Figs. 3 and 5. The contact arm 58, Fig. 3, is permanently geared to shaft 41, through worm 59 and Worm `wheel 69, shown on Fig, 5. The angular displacement of the commutator arm 53 is timed to have the identical angular displacement as the selector restoring drum 54.

Also mounted on shaft 4,1 is cam 6|, Figs. 3 and 5, which makes and breaks contacts 52 and S3, once for every complete revolution of shaft 41.

The number of contacts 64 on the commutator 51 correspond identically with the number of sef lector restoring studs 65 and the number of record shelves in the record magazine, the relation of which will be hereinafter described.

Mitre gear 52, Fig. 3, is held in its rotational position by bearing supports 68, 61, and collar 69. The shaft 469 is slidabiy mounted in the bore of mitre gear 52, supports 66 ,and B1, and the collar t3. The shaft 69 is provided with both right and lefthand helical grooves along a portion of its length.`

A. flattened follower pin 'I0 is rotatably mounted in mitre gear 52 and arranged to engage the helical grooves in the shaft 69. Thus, when mitre gear 52l is rotated continuously in one direction the shaft 69, being restrained from rotation, will oscillate backward and forward through a range determined by the length of the helical grooves. The righthand groove is engaged with the follower pin 19 for the forward movement of the shaft, and the lefthand groove being engaged during the return movement of the shaft. The direction of the flattened follower pin for each movement is changed at the point where the two opposite grooves join each other at the end of their respective courses.

Wedge 1l, Fig. 3, is guided for lateral sliding movement in ways 12 cut in the base I, and affixed to shaft; 39 by means of bracket 13. The wedge 'i I, Fig. 6, is shown in its withdrawn or retracted position with the record magazine in its lowermost position.

The record magazine assembly I2, Figs. 6 and 2,

f is shown resting by gravity on roller 14, which roller is mounted on the lower extremity of the record magazine base 28. Obviously, when the wedge 1I is advanced toward the record magazine, it will raise the entire magazine through a vertical path distances which are directly proportional to the movement of the wedge. f

The record transfer clutch member 15, Fig, 3, is integral with worm 16, both elements floating on transmission drive shaft 22. The worm wheel 11 rotates about its vertical axis 19 and is permanently meshed with the worm 16. When the sliding clutch member 45 is shifted to the position shown in Fig. l1, rotation of the shaft 22 is imparted to worm wheel 11. A control cam 19, Fig. 2, is mounted on the upper surface of the worm wheel 11 and will be hereinafter described. The record transfer crank pin 80, Fig. 11, protrudes from the upper surface of the cam 19 and provides reciprocating motion to the record transfer arms I6 and I1, Fig, 1, by means of link 811.

The vertical pivot shafts I8 and I9, Fig. 1, of the record transfer arms I6 and I1, carry cranks 8l and82, which are connected together by adjustable tie rod 83. One end of the connecting link 84 is attached to the tie rod at pivot 85, and the opposite end attached to the crank pin 80. Thus, when the worm wheel 11 is rotated onehalf revolution, the lrecord transfer arms are swung from their respective positions on each side of the magazine to their transferred posi- I -a. Armature |03 is pivotally attachedto tions (dotted lines, Fig. 1) on each side of the turntable. (The arm I6, swings through an'y one of the spaces between adjacent record shelves in the magazine.) Obviously, continued rotation of the worm wheel 11 one-half revolution in the same direction will returnv the record transfer arms to their initial positions as shown on Fig, 1.

On the extreme end of eachl record transfer arm is mounted a yieldable grooved rubber disk 86 for the .purpose of insuring a high friction contact to the edge of the record while it is being transferred.

The turntable spindle 81, Fig. 4, is pointed at the upper end and slidably arranged in the bore of the turntable quill shaft 39. Thus, the pointed end of the turntable spindle is below the surface of the turntable when the spindle is in its lowermost position.

The spindle 81, Fig. 4, is raised and lowered by the action of rocker arm 88 pivoted at screw 89,

Figs. 4 and 3. The lower end of the spindle 81 is loosely attachedto the forked end of the rocker 88. The opposite end of the same rocker 88 is in engageable relationship with cam 90, having on its underface a sharp incline 9|. Cam 90 is fixed to the lower extended end of transfer arm pivot shaft I8. Thus as the record transfer armA I6, Fig. 1, nea-rs the end of its motion when transferring a record, the sharply inclined surface 9|,

Fig. 4, of cam 90 engages. rocker arm 88 and projectsthe turntable spindle into the central hole of the record, and by the action of the tapered per end of the pillar and is provided with a projection extending downwardly.-

Stud is attached to a downward projecting arm `,96 of the pickup carriage 23. In normal rest position, the stylus end .of the pickup arm is held in raised position against the action ofgravity bystud 25 bearing against lever 95, and the cylindrical cam 94. f'

Rod 91 is fixed to the cylindrical cam 94 and l slidably passed through pivot block 98, which block is pivotally attached to tie rod 83. Ob'- viously, when the rod 83, .is reciprocated for transferring a record,-the cylindrical cam rotatesabout the axis of the pillar 92, thus lowering the pickup arm and permitting the stylus to engage the starting grooves of thephonograph record. The pickup arm I0, Fig. 8, is moved by the` playing ofthe record to a position shown by dotted lines on Fig. 9, about the axis 93. The flat spring 99, Fig. 8, Vfixed to the cylindrical cam 94,

1s provided .for abutment with carriage projec' tion 96 for returning the pickup arm and carriage to its normal position of rest, subsequent to the playing of the record.

Clutch member 45, Fig.,3', whichalternately drives the selector and record transfer elements,

is operated by bell crank |00, (pivoted on stud |0I) spring |02, armaturel |03-, spring |04 and cam' follower lever |05. Lever |05 is pivoted on stud |06 and is urged into contact with cam 19, by spring |04 at the projection of the lever the free 'end of lever |05, and said armature is urged away from the poles of` electro-magnet |01 by saddle spring |08. When the machine is in its restposition, the armature |03 retains the long arm of the bell crank |00 in the position shown, Fig. 3, against the retrieving action of coil spring |02. 'In this position, it is obvious that clutch member 45 is engaged with the selector clutch member,46.

A circular slotted ange |09 is integrally attached with selector clutch member 48 and the number of radial slots around its periphery corresponds with the number'of record shelves in the record magazine.

The short arm of the bell crank |00 is arranged to enter any one of said slots for the purpose -of locking the selecting mechanism in proper selected position when the clutch member 45 is disengaged from member 46.

Link I I0, Fig. 3, is pivotally mounted at one end of stud III and passes under the gears -16 and 11 and is urged against pin |I-2 protruding downwardly from the gear 11 'by coil spring I|3.V v

The master switch restoring lever |4 is pivotally attached at the free end of link I.I0.

Fig. 4 shows a sectional view through the selector assembly I4 and illustrates one set of selector parts in their operative relationship. Manually operatedk push rod I5 is arranged to move selector lever ||5 sufficiently far around its stationary1 pivot and against the restraining action of sp'ring ||6 to disengage the short arm of the selector bell crank II1, whichbell crank is mounted on a stationary shaft II8. The spring ||9 urges the short arm of the bell crank II1 in a downward direction. When the bell crank |I1 is released from engagement with lever ||5, the

'insulator |20, mounted on the long arm of the bell crank, closes electrical contacts |2I-I22.

Master switch release crank |23 pivoted about axis |23-a is common to all of the bell cranks ||1, and is in the position shown, Fig. 4, when .urged toward'its closed, position by spring |26.

When the machine is in its rest position the switch arm |24 is engaged with abutment II4-a of the restoring lever ||4. Integral with crank |23 is an elongated auxiliary crank |21 which is in operative contact with the lower edge of the y lever II4. Obviously, when the crank |23v isA moved downwardly by the action of any one of the bell cranks |I1 the elongated member |21 will move upward and release the engagement between the master switch arm |24 and the abut-v ment |I4-a,ithus-closing the master switch contacts |24 and |25.

The electrical components of the machine are connected as shown in theschematicwiring diagram, Fig. 14. Electric power is supplied tothe step-down transformer |28 from the power lines |33-I34 and to the 'driving' motor 2 through the 1 master switch I24-|25. One s ideof the secondary o'f the transformer |28 is connected to the common selector switch contacts |2| by con- When the bell crank I|1 magnet |01.

ductor |35, which conductor also feeds one side of the cuto switch |30, andthe turntable magnet 43. The opposite` secondary terminal of the transformer |28 connects with one side of the clutch magnet |01 through conductor |36, and also connects the remaining side of the turntable magnet 43 through switch ISI-|32. ySelector contacts |22 are connected to corresponding commutator contacts 64 by conductors |31.

Conductor |36 completes the circuit to magnet |01 through cutoff switch |29-|30. The same circuit through magnet |01 is completed through conductor |38 through the make and break contacts 62-63 and the contact Varm 58 of the commutator contacts 64.

'I'he normally open cutoff switch |29|30 is closed by the action of the pickup carriage after completing the play of a record. The normally closed turntable magnet switch v|3||32 is opened by the pickup carriage when the carriage is in its rest position. l

'I'he operation of the mechanism will be described under the assumption that an operator has depressed one of the ten push buttons I5, shown in Fig. 1. Referring to Fig. 4, the forward movement of any push button |5 will move a corresponding latch I5 against the restraining action of spring H6, which permits bell crank ||1 to be pulled into its. selected position by the action of spring I9, as shown by dotted lines. The movement of the bell crank simultaneously displaces crank |23 and closes one pair of contacts |2|-|22.

Referring to Fig. 10, the downward movementof the crank |23 raises the crank extension |21., which carries with it the free end of lever ||4. The resulting upward movement of lever |'|4 disengages the switch arm |24 and permits the master switch |24-I25 to close, thus starting the driving motor 2, Figs. 1 and 14.

During theselecting cycle, clutch member 45,

Fig. 3, is engaged with it mating selector'clutch member 46 and imparts rotation to shaft 41 and its associated components. The commutator arm 58 and the selector restoring drum 54 will rotate in timed relationship and simultaneously the `magazine elevating shaft 69 will move horizontally, carrying with it wedge 1|, Fig. 6, to raise or lower the magazine assembly I2. The direction of the movement of the wedge 1| is dependwhen the upper surface of a selected record shelf, with tsrrecord lying thereon, 'is slightly above the surface of the turntable.

Just following the closing of the make and break contacts 62-63, and following the momentary closing 'of' the circuit through magnet |01, a selector restoring stud 65, carried by drum 54, completes its mechanical engagement with its corresponding selector bell crank ||1 by restoring it to its normal latched position in engagement with lever I5, as shown on Fig. 4. The selecting cycle is completed when the magnet |01 is momentarily energized,` as shown in Fig. 11. The movement of the amature |03 releases Cam 8| is accurately timed to AcloseA the make and break contacts 62--63 at a timeV table by the movement ofarm |1 and its friction bell crank |00, permitting spring |02 to shift clutch member into engagement with the record transfer clutch member 15. 'I'he short arm of the bell crank |00 engages a slot in flange |09 corresponding with the selected record, thus locking the record magazine in its proper elevated position, and simultaneously locking all other elements driven by selector clutch member 46.

Therecord transfer cycle begins when worm* wheel 11,is rotated, las shown by arrow, Fig. 1l, by means of worm 16, clutch memb'ers 15 and 45, 'and shaft 22. Pin 80, Fig. 11, imparts reciprocating motion to the record transfer arms I6 and |1 through a course shown by dotted lines, Fig. 1, by means of connecting link 84, cranks 8|, 82, and adjustable tie rod 83. Thus, when gear 11 is rotated 180 degrees the selected record is slid out of its position of rest onto the turndisk 86. The distance between the edges of the two disks 86 is slightly greater than the diameter of the phonograph record. During the forward record transfer period, the cam 19 has likewise rotated 180 degrees, Fig. 12, and the cam follower lever |05 has retrieved the armature |03 against the restraining action of spring |04, suiiiciently to re-engage the extreme end of the long arm of the bell crank |00. A slight. further movement of cam 19 causes the elements to assume a position shown in Fig. 13, the clutch member 45 having been shifted to a neutral position when cam follower lever |05 passes ovr step :c in the cam 19. Thus, the record is transferred to the turntable.

During the latter part of the movement of the vrecord transfer arm I6, Fig. 4, cam 90 moves the short arm of rocker 88 rapidly in a downward direction, which movement projects the turntable spindle 81 through the central hole of the record. The tapered point of the spindle causes the record to be brought into a position concentric with the turntable for rotation. Also, during the latter part of the movement of arm I6, the repro ducer arm |0 is lowered, and its stylus is brought into playing contact with the starting groove of the record by the movement supplied by conlnecting link 83,.Fig. 2. Fig. 7 shows the reproducer arm being held in its raised position with stud 25 resting against lever 95 and a portion of cam 94.

Fig. 9 shows connecting link 83 fully advanced in the direction shown by arrow. The peripheral portion of cam 94 has rotated sufficiently far to permit the projection 96 of the reproducer carriage to move inwardly toward axis 93, thus lowering the stylus end of the reproducer carriage. The lowering movement of the reproducer carriage closes the contacts |3|-|32, Fig. 14, and energizes the turntable magnet 43, Fig. 3. Thus, the armature 44 moves shaft 36 along its axis and engages the clutch 34--35 which imparts the rotation of shaft 2| to the turntable and the selected record thereon. 'I'he reproducer stylus, inv playing the spiral groove of the record, will move the carriage I0 about vertical pivot 93 from a position -shown in dotted lines, Fig. 8, to its cutoff position, Fig. 9. At the finish of play, the reproducerarm closes contacts |29 and |30, Fig. 14, and again momentarily energizes magnet |01, which attractsarmature |03, Fig. 13, and permits the re-engagement of clutch member 45 with its mating member 15, thus starting the rotation of Worm wheel 11'. The rotation of worm wheel 11, Fig. 3, and the action of pin and its connecting link 84, starts the .connecting link 83, Fig. 9, to move in the direction opposite that shown by arrow, and results in the following functions, which occur substantially simultaneously.

First, the cylindrical cam 94, Fig. 7, moves between the pillar 92 and lever 95 to raise the stylus end of the reproducer arm. The raising of the reproducer arm opens the circuitthrough magnet 43, Fig. 14, by opening contacts I3||3,2.v Thus, the spring 42, Fig. 3, releases the turntable clutch 34-35 and stops the rotation of the turntable.

Second; and simultaneously, the continued lateral movement of connecting .link 83 retrieves the turntable spindle 81, Fig. 4, and moves lever I5, Fig. 1, toslide the record toward its position in the magazine. .At the same time, spring 99, Fig. 9, comes into contact with projection 96 of the reproducer carriage and moves the reproducer arm about its pivot 93 toward its rest position shown in Fig. 8.

Rotation of gear 11 continues until arm IE has slid the record back toits original position on its shelf inthe record magazine and restores the reproducer arm to its normal starting position, shown in Fig. 1. This last 180 degree rotationA of gear 11 likewise carries cam 19 through the same angular displacement. Cam follower lever |05 now assumes position shown in Fig. 3, and because armature |03 is engaged with bell crank |00, the clutch member disengages from a the transfer clutch member 15 and is forced into re-engagement with the selector clutch'member. During the last part of the angular displacement of gear 11, Fig. 3, link ||`D is moved by pin ||2 sufficiently against the restraining action of spring ||3 to cause lever H4, Fig. 10, to reengage with the switch arm |24, thus opening the master switch HEY-|25, and stopping the entire mechanism. Y

It is obvious that in the event any other push button rods l5, Fig. 1,` are manually depressed, the crank arm |21, Fig. 10 will be raised, thus preventing lever H4 from re-engaging the switch arm |2||.v Under these circumstances a complete repetition of the above. described operations will occur in sequence until all the selected records corresponding to push buttons I5 have been played.

Having described our invention, We claim:

1. In an automatic record player adapted to plural selectivity, a stationary rotatable turntable, a reproducer mounted above and swinggear, a shaft longitudinally movable within the bore of said gear having both right hand and left hand longitudinal helical grooves along a pre-determined portion of said shaft, said right hand and left hand grooves terminating in a common groove at each end of the shaft to form a continuous'groove, a swingable lug within the bore of said gear projecting into the helical groove on said shaft, and means on said shaft connected with the magazine for reciprocating the magazine through its pre-determinedcourse upon uni-directional rotation of said 'gear and longitudinal movement of the shaft.

2. In a plurally selective automatic record player, a stationary rotatable turntable, a reproducer mounted above and swing'able over said turntable, a record magazine adjacent to'said turntable having spaced record supports and ca.

pable of predetermined reciprocal movement along the axis of records contained therein, driven means cooperatively related with said magazine for reciprocating said magazine .through a predetermined, distance, a rotatable motor driven gear, a shaft longitudinally movable within the bore ,of said gear and cooperatively related to the said means, said shaft having both right and left-hand longitudinal helical grooves connecting each other at opposite ends to form a continuous. n

. vconnected with the magazine for reciprocating the magazine through a predetermined course u'pon the uni-directional rotation of the said gear and longitudinal movement of the shaft. l

3. In a plurally1 selective automatic record player, a record magazine having spaced record supports and arranged for predetermined reciprocal movement alongv the axis of the records contained therein, a power transmission shaft able over said turntable, a record magazine ady jacent to said turntable having spaced record supports and capable vof pre-determined reciprocal movement along the axis of the records contained therein, means for reciprocating the magazine, comprising a vrotatable motor driven adaptedfor uni-directional'rotation, reciprocatl ing means for reciprocating s aid magazine through al predetermined course, gear means adapted to be rotated bysaid shaft, va second shaft cooperatively related withthe said reciprocating means having endless right and lefthand helical grooves along a predetermined portion of its length, said second shaftadapted to reciprocate along its grooved length upon rotation of said` gear means, a selector restoring de vice geared to said first-mentioned shaft and arranged to be rotated thereby, said record magazine and said selector restoring device adaptedv tomove equall proportional increments upon the uni-directional rotation of the rst said shaft.

TnEoDoai: M. WRIGHT. LLOYD J, ANDRES. 

